package xue;

import java.util.HashMap;
import java.util.Objects;

public class TestHashMap {
    public static void main(String[] args) {
        HashMap<Key2,String> hashMap=new HashMap<>();
        for(int i=0;i<1000;i++){
            hashMap.put(new Key2(),new String("adfafew"));
        }
    }
}


class Key2{
    String a="A";
    int b=19324;
}